To me it feels more like a sliding scale on a monitor (30 hz sucks 60 hz is usable, 120 hz is awesome and beyond that I notice nothing but I also don't game) I have a dual 43" 4k setup at 60 hz right now for work, once those age out in a few years I will definitely be trying for 120 hz. The smaller the screen the higher the hz is that feels like it sucks.